Using the t test, we analyzed the association between maternal and infant characteristics and duration of skin-to-skin contact (KMC) per day. The association between duration of KMC per day during hospital stay (independent variable) and the dependent variables of breastfeeding (yes or no), extent of breastfeeding (exclusive or partial), and method of feeding breast milk (only breast or breast 1 bottle/only bottle/other method) was performed by t tests. Potential differences at 1 to 6 months between VPT and PT infants in breastfeeding, extent of breastfeeding, and method of feeding breast milk were analyzed with the chi-square test. For all tests, the significance level was set at po.05 (two-sided). The statistical package SPSS 14.0 for Windows (SPSS Inc., Chicago, IL) was used for statistical analyses.
Using the t test, we analyzed the association between maternal and infant characteristics and duration of skin-to-skin contact (KMC) per day. The association between duration of KMC per day during hospital stay (independent variable) and the dependent variables of breastfeeding (yes or no), extent of breastfeeding (exclusive or partial), and method of feeding breast milk (only breast or breast 1 bottle/only bottle/other method) was performed by t tests. Potential differences at 1 to 6 months between VPT and PT infants in breastfeeding, extent of breastfeeding, and method of feeding breast milk were analyzed with the chi-square test. For all tests, the significance level was set at po.05 (two-sided). The statistical package SPSS 14.0 for Windows (SPSS Inc., Chicago, IL) was used for statistical analyses.
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